An update on the cold water phenomenon in the North Atlantic. This is a subject of intense interest among scientists, not yet fully clarified. There are many large implications, including noticeable climatic effects in both North America and Northern Europe. (See the following story.)
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How hurricane Joaquin resembles Sandy at this stage. ” Even if Joaquin does not make landfall, its interaction with the trough is expected to dump substantial and torrential amounts of rainfall from North Carolina on through New England….” The idea that Sandy-like storms will increase sharply in long-term frequency due to climate change is about to be given an initial test.
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What is happening to the waters and glaciers around Antarctica? For those who have an interest, this recent lecture presentation by a senior field scientist, one hour long, is full of up-to-date information and fascinating imagery. The speech starts at 6 minutes in. For best quality, adjust the playback speed (lower left button) from 1.0 to 0.9.
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The average cost of solar energy to utilities in the US has now dropped to 5 cents per kwh. That’s down 70% since 2009, with investment tax credits being a helpful factor that is set to expire next year. It is noted that the cost of concentrated solar power (CSP) systems has not fallen to the same extent as that based on photovoltaic arrays.
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24% conversion efficiency projected for PERC solar cells, based on five separate applications of current know-how. The improvement would come from greater reflectivity at higher wavelengths. This is a look at a hotly competitive business where stakes are high and rapid shifts in market share are to be expected.
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A new approach to increasing the efficiency of almost any kind of photovoltaic solar cell. This is a practical application of current “invisibility cloak” technology that can raise converted yields by as much as 10%.
Carl